Register



March 3, 1953 H. s. HERMANSON ETAL REGISTER Flled March 22 1946 March 3, 1953 v H. s. HERMANSON ETAL 2,630,057

REGISTER Filed March 22, 1946 5 Sheets-Sheet I2 H. s. HERMANSON ET AL 7 March 3, 1953 REGISTER 5 Sheets Sheet 3 Filed March 22, 1946 March 3, 1953 H. s HERMANSON ET AL 2,630,057

REGISTER Filed March 22, 1946 5 Sheets-Sheet 4 HIITHIIIIIIH drzdfrede rid/Z Bribes Zing.

Patented Mar. 3, 1953 I UNITED STATES PATENT OFFICE REGISTER Henning S. Hermanson, Deerfield, and Frederick D. Joesting, Oak Park, Ill., assignors to Minneapolis-Honeywell Regulator Company, Minneapolis, Minn., a corporation of Delaware Application March 22, 1946, Serial No. 656,274

16 Claims. 1

One object of the invention is to provide a damper supporting frame which is mounted in such manner that a grille thereon can project from the wall surface without however projecting to such an extent that it detracts from the appearance of the wall, a damper arrangement being provided within the grille for permitting or stopping fiow of air from the duct as desired.

Another object is to provide a damper blade arrangement which equalizes the flow from the register regardless of the position at which the damper blades are adjusted so that adjustment does not change the flow pattern established during installation of the control damper and grille.

Still another object is to provide a grille of simple and inexpensive construction in which the grille bars are actually deflector or diffuser blades that can be so adjusted at the time of installation as to provide a desired lateral air distribution pattern, thereby providing for even distribution throughout the room regardless of whether the grille is centered with respect to a Wall therein or off-center in the wall.

A further object is to provide a turning vane assembly designed for low pressure drop and therefore maximum efficiency, the assembly being supported on the damper frame and located in the duct so as to also properly turn and distribute the air vertically with respect to the for closing them as. at night which arrangement .is comparatively simple, involving a minimum number of parts and those. parts being entirely carried by the damper blades. without the necessity of any stationary pivot brackets or the like,

thus effecting an efficient operation of the damper blades without any binding, and a stop for the maximum open position being provided which is adjusted only at the time of installation to balance out each register relative to all other registers in the system.

Another additional object is to provide a hinge structure for the damper blades which provides a seal through the hinges of the blades when they are closed, thus preventing any whistling sounds as ordinarily encountered where forced circulation is stopped by closed blades that have piano or other types of hinges that leave cracks through which the air flows at high velocity when the dampers are closed, and for securing a good air stream characteristic, that is one in which there is a single main air stream and no secondary air streams as through hinge joints to cause turbulence and disturbance to the main air stream.

With these and other objects in view, our invention consists in the construction, arrangement, and combination of the various parts of our device whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in our claims, and illustrated in the accompanying drawings, in which:

Figure 1 is a perspective view of a register embodying our present invention and showing only the portion that projects beyond the wall in which tions.

Figure 3 is an inside rear elevation of slightly more than one-half of the register structure with the turning vanes omitted and end brackets for the turning vanes shown in section.

Figure 4 is a sectional view on the line 4-4 of -Figure 3 showing the dampers in the register closed.

Figure 5 is a sectional view on the line 55 of Figure 4 to show portions of the damper operating linkage, this view being the reverse side of the linkage shown at the left hand end. of Figure 3.

Figure 6 is. an isometric view showing the completion of a register assembly comprising a grille assembly and a boot assembly, one end only of the assembly being shown as it is substantially the same at both ends.

Figure 7 is a sectional view similar to Figure 4 showing the dampers in opened position.

Fi ures is a similar sectional view showing the dampers closed and the linkage moved to an intermediate position between the positions of Figures 4 and 7.

Figure 9 is an isometric view showing an inside view of a stop element for the damper operating lever.

Figure 10 is a plan view partly in section of a grille assembly and a boot assembly in partially dis-assembled position, with a turning vane assembly shown in dot and dash lines.

Figure 11 is an enlarged sectional view at the center of the grille showing deflector blades and a tool for changing the angle of the blades as required for a particular register installation.

Figure 12 is a rear elevation of one end of a grille assembly showing the position of a sealing gasket by dot and dash lines.

Figure 13 is a rear elevation of one end of a boot assembly adapted to be superposed on the grille assembly of Figure 12 for forming the complete register. 7

Figure 14 is a sectional view on the line I l-l4 ,of Figure 12 showing the association of a grille .and a grille frame to form a grille assembly.

Figure 15 is a sectional view on the line I 5l5 of Figure 13 to show the association of a boot and a boot end.

Figure 16 is a developed view of a flat sheet of material shaped and punched prior to forming 'end and by dotted lines a turning vane supporting bracket associated therewith.

Figure 19 is a rear elevation of one corner of the boot to show its shape prior to assembly.

Figures 20 and 21 are enlarged sectional views on the lines 20-20 and 2l-2l respectively of Figure 19 showing a boot flange and a hinge ele- 'ment thereof, Figure 21 also showing the coaction of a damper blade with the hinge element,

and Figure 22 is a sectional view similar to Figure 21 showing a position that the parts assume during assembly of a damper blade to a boot of our register.

On the accompanying drawings we have used the reference character F to indicate a grille frame, G a grille, B a boot, and A a boot end.

These are the four major parts of our register, in

addition to which a vane assembly comprising vanes V and end brackets C for supporting the vanes complete the register assembly with the exception of damper blades D and minor parts which will hereinafter be described in detail.

The frame F is formed of sheet metal and consists of a rectangular frame-like portion having a pair of vertical elements It] and a pair of horizontal elements l2 lying in a plane parallel to a 1 wall W on which the register is mounted. The frame elements I 0 and I2 are provided with a peripheral flange I3 bent rearwardly or to the left in Figure 4 and upper and lower walls M and I6 bent forwardly or to the right in Figure 4.

L The walls l4 and I6 have flanges l8 bent toward each other.

The frame element 10 of the grille frame F is provided with a central ear 2t and a pair of ears 22 on opposite sides thereof initially in the shape shown' in Figure 2 but bent up to the dotted-shape 4 prior to assembly of the rille G and the boot B with respect to the grille frame.

The grille G comprises a sheet of initially flat metal slightly more than half of which is shown in Figure 16. This sheet has a series of holes 2! punched adjacent opposite side edges thereof and between the two series of holes the sheet is periodically slit as indicated at 24. At each end of the sheet a pair of flanges 23 and 25 are provided. The flanges 25 have openings 25 and a wide notch 28. The width of the notch 28 is substantially equal to the width of the ear 20 of the grille frame F. Along the sides of the sheet a plurality of spot welding ears 3!] are provided, and at the center of the sheet a vertical slot 32 is provided.

The sheet of Figure 16 is formed to the desired shape to form a grille by bending the marginal edges 34 at right angles to the body of the sheet as on the line 39 to serve as attaching flanges cooperating with the top and bottom walls 14 and i6 of the grille frame F. The flanges 34 are also bent to assume the shape of the flanges N3 of the grille frame which shape is perhaps best shown in Figures 1 and 10, and the portions of the sheet between the slits 2A form deflector blades 36 which are bent out of the surface of general curvature of the sheet as to the positions shownin Figure 10. These blades are adjustable at, the time of installation by the application of a slotted tool 33 thereto (see Fig. 11) whichmay be used to readily bend the blades to the desired angle to secure a desired lateral air distribution pattern. The punched openings 2| leave narrow connecting portions 40 which serve to keep the deflector blades 35 as an integral part of the grille G yet permit a limited number of bendings to place them at the proper deflection angle at the time of installation of the register after which, of course, they remain permanently in position.

The boot B comprises a rectangular frame-like sheet of metal having horizontal frame elements 42 and vertical frame elements 44. A peripheral flange 48 extends rearwardly from the frame ele- 'ments 42 and M. Along the inner edges of the frame elements 42, somewhat wider boot flanges 48 are formed which extend rearwardly. These boot flanges terminate in slightly curved edges 50 and each edge is provided with a further curved hinge portion 52. The hinge portions 52 are adapted to receive the damper blades D which blades are provided with rolled edges 58 to rotate in the hinge elements 52 and closely fit the curved flanges 50 to prevent air passage at this point, particularly when the dampers are closed. The damper blades D are substantially flat with their outer or forward edges only slightly curved as illustrated at 60 to provide for maximum strength and smooth air flow from a forced circulation system for which our register is particularly designed.

The boot B at each end is provided with .a slot 62, the purpose of which will hereinafter appear. Each end of each boot flange 48 is provided with an ear '64 to coact with the boot end A. The boot end A consists of an angle shaped member having flanges 66 and 68 as shown in Figure 2 bent at right angles to each other. The flange 66 is provided with a narrow ear m and a wide oifset ear 12. The flange 66 is also provided with a pair of slots 14 and a pair of ears 16, the purpose of which will hereinafter appear. The flange 63 is provided with a long notch 18 which is equal in length to the distance between the outside edges of the ears 22 of the-frame F.

After the various parts thus far described are formed they are assembled in the following de-- scribed manner:

Two sub-assemblies are first made. One is the grille assembly and. the other is the boot assembly. The assembly of the grille consists of moving the grille G in the general direction of the arrow 80 in Figure 2 and then down with the notch 28 receiving the ear 2!] and the slots 26 receiving the cars 22 which of course are first bent upto the dotted position. The grille G isthen secured. to the grille frame F, being spot welded at the six cars 30 and at two points on each flange 25, for instance midway between the slots 26 and. the ends of the flange. The grille assembly will then appear in rear. elevation as shown inliigure 12.

The boot assembly is made up by moving the boot ends, A toward the ends of the boot B as indicated by the arrow 52 in Figure 2 and associating them with the ears Stwhich are received through the slots 74. The ears 64 are then twisted as shown in Figures 3 and 6 to retain the boot ends in position. A rear elevation of one end of the boot assembly will then appear as in Figure 13.

Each damper blade D is next installed by hooking its rolled edge 58 in the hinge elements 52 as shown in Figure 22 and then swinging the blade as indicated by the arrow 53 around to the position of Figure 21. The cars 16 of the boot ends may then be bent inwardly as shown in Figures 3 and 13 to take up end play on the damper blades. This completes the boot assembly and a rear elevation thereof will appear as in Figure 13.

The boot assembly is now associated with the grille assembly by moving the boot assembly as indicated by the arrow 84 in Figure 2 (or up- Wardly in Figure 10 where the partsare in such position that the ears 2 d and 22 have entered the slot 62 of the boot and are about to enter the notch 13 of the boot end). When the parts are fully brought together they will appear as in Figure 14 and also as in Figure 3 except that the ears 20 and 22 at this time are extended toward the observer of Figure 3 instead of being bent against the boot end A. The final assembly operation is to bend them down as shown in Figures 3 and 6, this of course being done at each end of the register, and the grille and boot assembly is then complete.

The peripheral flange 45 of the boot B serves as a positioning means for a gasket 86 of sponge rubber or the like adapted to serve as a seal againstthe wall W to prevent air leakage around the register. The completed register itself is mounted by means oi screws 88 through openings 90 in each of the wall portions iii of the frame F. These screws may extend into flanges 92 of a duct D or any suitable element mounted to receive the screw in such manner that the register can be drawn toward the wall W and compress the gasket 86.

We provide a third assembly which may be termed a turning vane assembly and which comprises turning vanes V and supporting brackets C. The vanes are supported with relation to the brackets by means of two ears 94 at each end of each vane, which ears extend through notches 96 in the brackets and are then bent over to retain the vanes and brackets i assembled relation to each other. In each bracket there are five of the notches 96 and a slot! for receiving the six ears 94 of the three "vanes V.

'Each vane supporting bracket C is also provided with a pair of narrow notches 98 and 99 in its upper edge and a pair of wide notches: I00 and Ill! in its lower edge. As shown in Figure 18 the notch Hill is adapted to coact with the offset.

ear 12 of the boot end A and the narrow notch 93 is adapted to register with the ear (0 after which theear l0 is bent into the notch 92! and then down against the bracket C. Thus each bracket may be assembled to its respective boot end and supported in position for a duct D located in a thin wall, that is one plastered or otherwise treated with athin wall surface as shown by dot and dash lines in Figure 17, or if the duct is located as shown at D" for a thick wall then the brackets can be set further rearwardly so that the ears I2 and 79 of the boot ends A coact with the wide and narrow notches [0i and 99 respectively of the vane supporting brackets C. The vanes will in either case be approximately centered relative to the duct. The turning vane assembly is thereby adjustable at the time of installation for either a thin wall or a thick wall and of course after installation the cars 10 bent into the notches 98 retain the turning vane assembly permanently in the installed position.

Some" means must be provided to convenient- 1y move the damper blades D to the closed position of Figure l or to the open position of Figure '7. We have provided a damper linkage arrangement entirely mounted on the damper blades and having an operating lever projecting through the central slot 32 of the grille G. The operating lever is shown at 102. The lever I02 has a pair of pivots I04 and I06. On the pivot HM a link me is pivoted intermediate its ends and at its lower end it is pivoted at HG to the lower damper blade D. The pivot HE is in the form of a pin having its ends spot welded at I I3 to the lower damper blade. Its upper end is pivoted at H2 to a damper lever H4 which lever has a foot H5 secured to the upper damper blade, as by spot welding indicated at m. The pivot me of the operating lever H32 is then connected by a link H5 to a pivot H3 carried by the damper lever H 4.

The link H6 as best shown in Figure 3 has aloop or U-shaped portion I20 formed therein to glveit some degree of resiliency for positively retaming the dampers closed due to the pivot I06 passing over-center relative to a line between the pivots Hi -l and I l 8, the dead-center positionbeing shown in Figure 8. In closing the dampers. they are in the closed position when the linkage is in the position of Figure 8 and further upward movement of the outer end of the operating lever I02 from the position of Figure 8 to the position of Figure 4 causes the U-shaped portion I26 to expand again and lock the blades in closed position when the linkage reaches the position shown in Figure 4.

In returning from the position of Figure 4 to the position of Figure 7 the dead-center position of Figure 8 is passed through and the operating lever Hi2 lowered to the wide open position of the dampers as shown in Figure 7. A spring !22 connects a lug It' l of the link 168 to a lug 25 of the damper lever lid to constrain the damper blades toward their wide open position and the resiliency of this spring keeps them in that position against any vibration orclosing tendency.

The character of'the link I 1'6 is such that it is also adjustable at the time of installation to secure'the desired degree'of over-center "snap installations.

=is installed by the heating engineer.

and compensate for variations in manufacture. The U-shaped portion I20 can be opened wider to increase the snap or closed in small increments to decrease the snap if there is too much snap.

To clear the operating lever I02 the upper damper blade D is provided with a notch I21 and the lower damper blade is provided with a notch I29 as shown in Figure 5.

A stop I28 is provided for the maximum open position of the dampers which position may be as in Figure 7 or some position less open such as shown by dotted lines if the stop I28 is adjusted for instance to the dotted position shown. The stop I28 is a square of metal having an ear I30 received in the slot 32 of the grille to keep the stop from turning. The stop is threaded to receive a screw I32, the head of which is on the outside of the grille. A washer I34 is interposed between the grille and the stop I28. The screw I32 may be loosened for permitting shifting of the position of the stop, and then retighteneol for clamping the stop to the grille adjacent the edges of the slot 32, these edges being gripped between the washer I34 and the head of the screw.

At the time of installation the engineer determines the proper degree of opening for the damper blades to balance out with respect to the other registers in the installation and of course the dampers of each register are thus properly adjusted in relation to every other damper depending upon the size of the room, the distance of the register from the air circulating blower and other factors. Thereafter the householder has only two settings: (1) Opened to the maximum position determined by the stop I28 when heat is desired or (2) completely closed when heat is not desired, for instance as required at night time in a bedroom.

Our register has a number of advantages as will be obvious from the foregoing specification, one of which is simplicity of construction and assembly. The grille G has the advantage of being formed of a single sheet of metal which can be shaped and assembled in relation to the grille frame F, after which the assembly of boot and ,boot ends together with damper blades may be positioned on the grille assembly and the assembly of all five of these parts completed by bending of siX ears 20 and 22. The turning vane assembly can be quickly positioned and retained in position by the simple ex- .pedient of bending the two cars I to their retaining positions. The turning vane assembly can be adjusted at the time of installation to accommodate either a thick wall or a thin wall. By

having the ear I2 and the notches I80 and IEII relatively wide while the ear I0 and the notches 98 and 99 are relatively narrow there is no possibility of installing the vanes wrongside-up. The register itself is always installed with the stop I28 down.

The turning vanes may be omitted from some This is a further reason for having the turning vane assembly separate from the register so that the vane assembly can be used or not as required.

The duct D is mounted in the wall W at the time it is built, after which the wall is plastered and after the plaster is dry the register assembly The boot and grille assembly are completed at the factory,

and on the job the engineer installs the turning vane assembly (if used) in the proper posi- "tion for either a thick wall or a thin wall. Aside from these operations, the only other operation for installation is the insertion of the screws 88 through the openings 90 of the register and into the flange 92 of the duct. These are preferably metal piercing screws to facilitate installation.

The heating engineer then adjusts the deflector blades 36 (which were delivered to the job set approximately at the angles in Figure 10) so as to get the proper lateral air distribution depending upon the shape of the room, its position in relation to the register and other factors. He also adjusts the stop I28 and this completes the installation and adjustments of the entire register.

Some changes may be made in the construction and arrangement of the parts of our device Without departing from the real spirit and purpose of our invention, and it is our intention to cover by our claims any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

We claim as our invention:

1. In a register, a grille frame having ears at the ends thereof, a grille mounted in said frame and having slots and notches receiving said ears, a boot frame having slots receiving said ears, boot ends having slot and ear connection with said boot frame, said ears of said grille frame being bent over the edge of said boot ends to re tain the grille and boot frame assembled, a pair of damper blades hinged to said boot frame, said boot ends having ears arranged to contact the ends of said damper blades to limit end play thereof.

2. In a register, a grille frame having ears at the ends thereof, a grille mounted in said frame and having slots and notches receiving said ears, a boot structure havin slots receiving said ears, said ears being bent over to retain said grille and boot structure assembled, and a pair of damper blades hinged to said boot structure and mounted therein.

3. In a register, a grille frame having ears at the ends thereof, a grille mounted in said frame and having slots receiving said ears, a sub-frame boot structure having slots receiving said ears, said ears being bent to retain the grille and boot structure assembled, a pair of damper blades hinged to said boot structure, and a turning vane assembly comprising end brackets and turning vanes having their ends connected to said brackets, said brackets being supported on said boot structure.

4; In a register, a grille frame having a grille mounted in said frame, a boot structure for said frame, boot ends connected with said boot structure, and a pair of damper blades hinged to said boot structure, said'boot ends having ears to contact the ends of said damper blades to limit end play thereof.

5. In a register, a grille frame, a grille and a flanged boot structure mounted in said frame, boot ends connected With said boot structure, a pair of damper blades hinged to said boot structure, and a turning vane assembly comprising end brackets and turning vanes having their ends connected to said brackets, said boot ends having ears and said brackets having notches for coaction therewith for supporting said turning vane assembly on said register, said notches of said brackets being plural in number for selective coaction with said ears of said boot ends for installation of said turning vanes at different spacing in relation to said grille.

I a register h v ng an opening for air therethrough and having a frame around said op ing; rearwardly extending flanges attached to said frame and arranged near the top and bottom of said opening, the rear-most edges of said flanges being curved; damper blades having rolled edges fitting said curved edges to form a hinged connection of said damper blades to said flanges; and means for adjustin said damper blades toward and aWay from each other comprising a damper operating lever having an outer end and an opposite end, a damper blade leverconnected to one damper blade, a link pivoted to said last leverand to the other damper blade, said damper operating lever being pivoted on and supported by said link, a pivot arranged at a point on the opposite end of said operating lever spaced from the pivotal mounting of said operating lever, and a second. link connecting said last pivot to a pivot on said damper blade lever spaced rearwardly from the pivotal connection of said first link thereto, said second link having a U -shaped bend therein .to give resiliency to the link in overo ter position with h blade cl ed the adjacent edges of said blades being notched to clear said damper operating lever.

'7. In a register having an opening for air therethrough and having a frame around said opening; a pair of rearwardly extending flanges attachet to said frame,,one flange being near the top and the other flange being near the bottom of said opening; a pair of damper blades; means hinging one edge of one of said blades to the rear edge of one of said flanges and the other of said blades to the rear edge or the other of said flanges, said damper blades being arranged to control air flow through said opening; and linkage means for opening and closing said damper blades, said linkage means comprising a damper operating lever having an outer end, a damper blade lever rigidly connected to one damper blade and having aremote end, a link pivoted to an intermediateportion of said last lever and to the other damper spaced along said operating lever from the pivotal mounting of said lever and in a direction ,away from the outer end of said operating lever, and a second link connecting said last pivot to a pivot on the remote end of said damper blade lever and spaced from the pivotal connection of the first link thereto.

n g ster havin openin for a r h h oush and h in a frame around said ope i g; a pair of flanges attache to said frame and extending rearwardly therefrom, one flange being near the top and the other flange being near the bottom of said opening; a pair of damper blades; means hinging an edge of one of said blades to one of said flanges and an edge of the other blade to the other flange, said blades being arranged to control air flow through said opening and movable toward and away from each other; and means for adjusting said damper blades comprising a damper operating lever having an outer end, a damper blade lever rigidly supported on one damper blade and having an unattached end, a link pivoted to said last lever and to the other damper blade, said damper operating lever being pivoted on and supported by said link, said operating lever having a portion extending beyond said link in an opposite direction from said outer end, and a second link pivotally connecting said unattached end of the damper blade lever to the extending portion of the operating lever and movable from a position in alignment with said portion of the operating lever to various angular 10 positions relative to said portion, said second link being resilient between its pivotal connoctions'to lock said damper blades closed in allover-center position of the linkage.

9. In a register comprising a grille frame around an opening. a pair of damper blade hingedly mounted .to swing within said grille frame and .control air flow through said openin a grille covering the front of said grille frame, linkage means for operating said dam er blades comprising a damper blade lever secured to one blade, a link pivoted tosaid leverandto the other blade, a damper operating lever pivoted to said link, a lillkuCQIlI-IBCMOH between said damper blad lever and said operating lever, said link connection being so arranged that pivotal movement of said operating lever causes a change in the relative angular positionsof said damper b ade lever and the link thereby varying the posit-ionsof said damper blades, said lmkage means being entirely pp t d lav-t e damp r lades, said grille having a slot through which said damper operatin lever extends, and an adjustable stop said slot for limiting the movement of said operating lever and thereby determining the maximum open position of said damper blades.

10. In a register comprising a grille framedisposed around an opening, arpair of damper blades hlngedly mounted for movement within said grille frame for controlling said opening, aigrille covering the front of said grille frame, linkage means for operating said damper blades comprising a damper blade lever :secured tonne blade, a link pivoted to said lever and to the other blade, a damper operating lever pivoted-to said link and having a portion extending toward said damper blade lever, and a link connection between said damper blade lever and said portion of the damper operating lever, said linkage means being thereby entirely supported by the damper blades, said damper operating lever extending through the front of said grille, said second link passing over-center for locking said damper blades in closed position and being shaped to provide for resiliency to permit of such passage over-center.

11. In a register comprising a grille framedisposedaround an opening; a pair of damper blades hingedly mounted to swin within said grille frame for controlling said opening; a grille covering the front of said grille frame; and linkage means for operating said damper blades comprising a damper blade lever secured to one blade, a link pivoted to said lever and to the other blade,

a damper operating lever pivoted to said link, a link connection between said damper blade lever and said damper operating lever, a portion of said operating lever being arranged to pass through a position wherein it aligns with said link connection as said operating lever is moved from one of its extreme positions to another, said linkage means being thereby entirely supported by the damper blades, said damper operating lever extending through the front of said grille, and a spring connecting said damper blade lever to said first link and tending to retain said damper blades open.

12. In a register, a grille frame disposed around an opening, a grille attached to said frame and extending over said opening, a boot assembly attached to said grille frame and having damper blades mounted thereon for controlling air flow through said grille frame and grille, said boot assembly including oppositely disposed boot ends, securing means formed in said boot ends, bracket means, turning vane attached to said bracket means, and a plurality of spaced attachment 'means formed in said bracket means for selectively and detachably connecting said bracket means and the attached turning vanes to said securing means and thus to said frame.

13. In a register, a grille frame, a grille thereon,

damper blades attached to said frame for controlling the flow of air through said grille frame and grille, a turning vane assembly comprising a mounting bracket member and a turning vane attached to said member, a member having a rearwardly disposed flange attached to said grille frame, a pair of spaced ears secured to one of said members, and a plurality of pairs of notches formed in the other of said members for coaction with said ears, said turning vane being positioned in one location relative to said grille frame when one pair of notches coact with the pair of ears and being differently positioned when another pair of notches coact with the ears, said member also being readily disconnected if the turning vane is not needed.

- together, a pair of rearwardly extending flange members attached to said frame and spaced apart a sufficient distance to coact with said bracket members, a pair of ears formed on each member of one pair of said members, and a plurality of pairs of notches formed in each member of the other pair of said members, said notches coacting with said ears to secure said turning vanes and their bracket members to said frame, an

ear of each pair of ears being bendable, the

' plurality of pairs of notches permitting a selective positioning of the turning vanes at different distances from said frame to thereby permit the register to be used with either a thin or a thick duct.

15. In a register, a grille frame, a grille thereon, damper blades for controlling the flow of air 1 through said grille, said register being adapted for association with a duct having a bend at i the top of the duct, a turning vane assembly comprising a pair of mounting bracket members and a plurality of turning vanes connecting said bracket members together, a pair of sheet metal 12 members attached to said frame, a pair of ears on each member of one of said pairs of members, and a plurality of pairs of spaced selectively usable notches in each member of the other pair of members, said ears and notches coacting to detachably and selectively secure said turning vane bracket members to said frame in one or another of a plurality of positions to thereby permit the register to be efficiently used with either a thin or thick duct.

16. A register comprising a grille frame; a grille thereon; damper blades attached to said frame for controlling the flow of air through said grille frame and grille; said register being of the.

sort usable with a duct having a bend therein; and a turning vane assembly arranged to extend into such a bend and comprising a pair of mount ing bracket members and a plurality of turning ,vanes connecting said bracket members together,

a pair of spaced boot end members attached to said frame, a pair of ears formed in each member of one of said pairs of members, and a plurality of pairs of notches formed in each member of the other pair of members for selective coaction With said ears, said ears and notches coacting to adjustably secure said turning vane assembly to said frame.

I-IENNING S. HERMANSON. FREDERICK D. JOESTING.

REFERENCES CITED The following references are of record in the file of this patent:

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